motodevo
Miniriders OG Master Spanner Spinner
Hi just wondering if anyone knows whether crf50's use a 10mm or 12mm for the swingarm pivot bolt. The reason i ask is i have a oddball chinky frame that takes a 10mm swingarm bolt and a swingarm that takes a 12mm. I know i could swap out the bushes on the swingarm for 10mm bushes, but i plan on getting another swinger anyway and was wondering if i should bother welding in a larger tube to suit a 12mm bolt or not. Is it a case that 12mm is more a chinese standard like using 15mm axles over 12mm axles for extra strength? Thanks